We report a facile and robust room-temperature NO

Functional surface coatings were applied on high voltage spinel (LiNi0.5Mn1.5O4; LNMO) and Ni-rich (LiNi0.85Co0.1Mn0.05O2; NCM851005) NCM cathode materials using few-layered 2H tungsten diselenide (WSe2). Simple liquid-phase mixing with WSe2 in 2-propanol low-temperature (130 °C) heat treatment nitrogen flow dramatically improved electrochemical performance, including stable cycling, high-rate lower hysteresis Li coin cells at 30 55 °C. Significantly capacity retention °C [Q401/Q9 of 99% vs...

Two-dimensional (2D) semiconducting heterojunction chemical sensors are in high demand because of their enhanced response, stability, and selectivity. However, fine-tuning heterojunctions using vapor deposition growth still needs further research. Our present study focuses on the ambient pressure (CVD) synthesis hexagonal tungsten sulfide-tungsten selenide (WS2–WSe2) p–p (as a 2D–2D arrangement). We use liquid-phase exfoliation method to disperse bulk WS2 WSe2 decorate large flakes with...

Layered transition metal dichalcogenides (TMDCs) are considered among the next-generation materials for gas sensing. Here, we report exfoliated 2H-WS2 nanosheets fabrication of highly performing NO2 sensors. Thermal annealing at several temperatures was performed to investigate oxidation WS2. The long-term stability bulk verified. Using droplet variation method, three batches conductometric sensors from dispersions were fabricated on electrical transducers, namely two layers (2 L), five (5...

Among the most reliable techniques for exfoliation of two-dimensional (2D) layered materials, sonication-assisted liquid-phase (LPE) is considered as a cost-effective and straightforward method preparing graphene its 2D inorganic counterparts at reasonable sizes acceptable levels defects. Although there were rapid advances in this field, effect outcome sonication frequency are poorly understood often ignored, resulting low efficiency. Here, we demonstrate that simple mild bath higher power...

2D layered transition metal selenides grown in ambient pressure CVD for promising energy storage applications.

We report a facile two-furnace APCVD synthesis of 2H-WSe2. A systematic study the process parameters is performed to show formation phase-pure material. Extensive characterization bulk and exfoliated material confirm that 2H-WSe2 layered (i.e., 2D). X-ray diffraction (XRD) confirms phase, while high-resolution scanning electron microscopy (HRSEM), transmission (HRTEM), atomic force (AFM) clarify morphology Focused ion beam (FIB-SEM) estimates depth formed on W foil be around 5-8 μm,...

Recently, graphene and its derivatives have been extensively investigated for their interesting properties in many biomedical fields, including tissue engineering regenerative medicine. Nonetheless, oxide (GO) reduced GO (rGO) are still under investigation improving dispersibility aqueous solutions safety different cell types. This work explores the interaction of rGO with polymeric dispersants, such as glycol chitosan (GC), propylene alginate (PGA), polydopamine (PDA), effects on human...

Electroconductive textiles (e-Textiles) are vital in developing wearable sensors that preserve the comfort and characteristics of textiles. Among two-dimensional (2D) transition metal dichalcogenides (TMDs), considered a promising option for sensor applications, tungsten di-selenide (WSe2) homostructures have been used as humidity- temperature-sensing materials e-textiles, mentioned first-of-its-kind report. Exfoliated chemical vapor deposition (CVD)-grown 2H-WSe2 nanosheets were dispersed...

The high concentration of antibiotics in aquatic environments is a serious environmental issue. In response, researchers have explored photocatalytic degradation as potential solution. Through chemical vapor deposition (CVD), we synthesized copper selenide (β-Cu2−xSe) and found it an effective catalyst for degrading tetracycline hydrochloride (TC-HCl). demonstrated impressive efficiency approximately 98% reaction rate constant 3.14 × 10−2 min−1. Its layered structure, which exposes reactive...

Developing high performance catalysts for electrochemical water splitting is critical an efficient and sustainable route to hydrogen production.

Abstract Raman spectroscopy in transition metal dichalcogenides (TMDCs) helps determine their structural information and layer dependency. Because it is non‐destructive fast, an archetypal spectroscopic technique to investigate the structure defects TMDCs. In our earlier study, we used a metal‐dielectric coating enhance signal of WS 2 because Spectra measured from coated on standard Si/SiO was significantly lower. This allowed access otherwise unavailable E 1 2g A 1g modes . this compare...

Abstract We designed a heterostructure of Fe 3 S 4 @Ni 2 , as potent oxygen evolution reaction (OER) electrocatalyst in an alkaline medium. Intriguingly, exhibits low onset potential 290 mV and overpotential 360 at current density 10 mA cm −2 . examined the OER kinetics using distribution function relaxation times (DFRT), which are attained with help impedance spectroscopy genetic programming (ISGP). ISGP reveals occurrences three events OER, manifested peaks DFRT, such active material or...

Sunlight-driven photocatalysis is an environmentally friendly approach to solve ecological issues. The development of simple yet sufficiently stable photocatalytic materials capable responding the full-spectrum light remains challenging. Here, we demonstrate phase transformations bulk copper sulfides from digenite (Cu9S5) djurleite (Cu1.97S) and low chalcocite (Cu2S) by reactive thermal annealing during ambient pressure chemical vapor deposition, followed their top-down exfoliation. Using...

Enormous potential loss and sluggish kinetics of the oxygen evolution reaction (OER) limit practical implementation water electrolyser systems. We attempt to address these technical challenges through synthesis cobalt–chromium-layered double hydroxide nanosheets (CoCr LDH) on oxidized-carbon nanotube (O-CNT) backbones as efficient OER electrocatalysts. Microscopic elemental distribution analysis suggests that interconnected sheets CoCr LDH masks over O-CNTs. tested various compositions...

Transition-metal dichalcogenides (TMDCs) are unique layered materials with exotic properties. So, examining their structures holds tremendous importance. 2H-MoSe2 (analogous to MoS2; Gr. 6 TMDC) is a crucial optoelectronic material studied extensively using Raman spectroscopy. In this regard, low-frequency (LFR) spectroscopy can probe material's structure as it reveals distinct vibration modes. Here, we focus on understanding the microstructural evolution of different morphologies and layers...

The electrocatalytic oxygen evolution reaction (OER) is an arduous step in water splitting due to its slow rate and large overpotential. Herein, we synthesized glycerate-anion-intercalated nickel–iron glycerates (NiFeGs) using a one-step solvothermal reaction. We designed various NiFeGs by tuning the molar ratio between Ni Fe obtain Ni4Fe1G, Ni3Fe1G, Ni3Fe2G, Ni1Fe1G, which tested for their OER performance. initially analyzed catalytic performance of powder samples immobilized on glassy...

Malaria is a major public health concern with over 200 million new cases annually, resulting in significant financial costs. Preventive measures and diagnostic remedies are crucial saving lives from malaria, especially developing nations. 2D materials are, therefore, ideal for fighting such an epidemic. Graphene its derivatives extensively studied due to their exceptional properties this case. The biomedical applications of graphene‐based nanomaterials have gained interest recent years...

Abstract Lithiated transition metal oxides are the most important cathode materials for lithium‐ion batteries. Many efforts have been devoted in recent years to improving their energy density, stability, and safety, as demonstrated by thousands of publications. However, commercialization several promising is limited due obstacles like stability limitations. To overcome limitations energetically high‐voltage or high‐capacity materials, unconventional solutions surface engineering were...